Punching-machine.



No. 806,362. PATENTED DEC. 5, 1905. E. H. PORTER & B. G'URRIER. PUNCH ING MACHINE.

APPLICATION IILED' MAR. 29, 1905.

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A TTOR'NE V.

No. 806,362. PATENTED 1350.5, 1905. E. H. PORTER & B. GUR'RIER.

PUNGHING MACHINE.

APPLICATION FILED mums, 1905.

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Fla/ WITNESSES: INVENTOAS Eda/070E Parter d M r gurkg'yl'urrer No. 806,362. PATENTED DEC. 5, 1905. E. H. PO-RTERfiz B. 'GURRIER.

PUNGHING MAGHINE. APPLIGAIION FILED MAR.29, 1905.

4 SHEETS-SHEET 3- VEN T 0R5 Edwin liforer ma jurlezfyk Currier Y WITNESSES ATTORNEY? UNITED S PATENT OFFICE- EDWIN H. PORTER AND. BUBLEIGHPOURRIER, 'OF PHILADELPHIA, PENN- v SYLVANIA. r

PUNCHING-M'AQHINE.

Specification of Letters Patent.

-Patented. Dec. 5, 1905.

Application filed March 29, 1905. Serial No. 252,614.

To all whom it may concern:

Be it known that we, EDWIN H. PORTER and BURLEIGH CURRIER, citizens of 'the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania,

have invented certain new and useful Improve- I ments in Punching- Machines, of which the following is a'specification.

. Our invention relates to improvements in.

IQ punching'machinery'; and'the object of our invention is to produce a machine for cutting sheet-metal plates and forming them into disks or rings and at the same operation form notches in either the inner or outer edges of 5 the same. i

A further object of our invention is to produce a punching-machine which is particularly adapted to making rings for laminations for electrical machinery at a minimum of I labor and to do so rapidly and more accurately than heretofore and at a greater reduction in the cost of production and also the cost of the .dies and punches used in this class of machinery. r

' Our invention consists of a punching-machine having a Work-table made of a plurality of sections and means for rotating said sec: tions simultaneously by a step-by-step movement in conjunction with the operations of the punches, together with various novel features .of construction and organization of parts, which will be hereinafter more fully set forth and claimed.

Referring to the accompanying drawings, Figure 1 is a plan view of our improved punching-machine. Fig. 2 is a vertical section as on line 2 2, Fig. 1.' Fig. 3 is an end view taken from the right-hand end of Fig.1. Fig. 4 is a partial vertical section, on alarger '4 scale, similar to Fig. 2, illustrating in diagram the electrical connections. Fig. 5' is adiagrammatic View of a sheet of metal, illustrating different designs into which the rings may .be formed. Fig, 6 is a diagrammatic view of the collector rings, brushes, and connecting-circuits supplying currentfor the magnetizing-coils.

In the drawings, A represents the bed-plateof the machine, having suitable supports a 5 and an upright bearing B and also a bearing shaft D through the medium of the gearwheel cl and the pinion d. Upon the shaft D are eccentrics'E andE, having connectingrods 0 and e, carrying a cross-head F, guided at either end by guideways f and f in the bearings C and B. Upon the cross-head F are secured the punches G in suitable stocks 9.

The' upper surface of the bed-plate A is provided with annular grooves A,'each of which is adapted to receive the annular projection H on the under side of each section H forming the work-table H (More clearly shown in Fig. 4.) The sections H of the work-v table are each provided upon their outer periphery with ratchet-teeth it, which are engaged by a pawl I, pivoted to an arm I, located below the sections H. The said arm is pivoted at i to the bed A and is vibrated by a connecting-rod J, attached to the outer end of the arm at oneend and at the other end to a crank J on a rock-shaft J having at its opposite end acrank J which is connected by a rod J to a crank-pin J on the end of the shaft D. The ratchet-teeth on the different sections H are so proportioned that a movement of the arm I will cause all said sections to rotate simultaneously. r

The bed-plate A is provided With apertures A to receive the dies G, which are located directly below the punches Gr.

The sections H of the work-table are provided with circular grooves h and 57, into which is coiled insulated copper Wire H Said grooves are covered by a circular plate or ring if. v In Fig. 4 the method of. connecting the coils H is shown, but any desired method may be employed. Collector rings and brushes may be inserted between the dif ferent sections H, as indicated at it, Fig. 6,

to connect said coils. ,The coils are supplied with a direct current from any suitable source to magnetize the sections of'the work-table .of a work-table formed of a plurality of circular sections, means of rotating said sections,

roo

a punch and die located between saidsections and means for operating the same, substantially as described.

3. The combination in a punching-machine, of a work-table formed of a plurality of independent circular sections, a pair of dies and punches located one at either side of each of said circular sections, means for operating said dies and punches and of advancing said circular sections at every operation of said dies and punches, substantially as described.

4:. The combination in a punching-machine, for the manufacture of circular sheetiron laminations for electrical machinery of a circular work-table arranged to revolve between a pair of dies, a pair of punches arranged to cooperate with said dies, the whole arranged and operated to successively punch out small segments of circles of different radii of a sheet of metal carried by said work-table, substantially as described.

5. The combination in a punching-machine forelectric machine laminations, of a worktable composed of a plurality of concentric revolving sections, a plurality of dies and punches operating between said sections, and means for holding a sheet of metal on said table, substantially as described.

6. The combination in a punching-machine for electrical machine laminations, of a worktable composed of a plurality of concentric revolving sections, a plurality of dies and punches operating between said sections and magnetic means for holding a sheet of iron on said work-table, substantially as described.

7 The combination in apunching-machine for electrical machine laminations, of a plurality of dies and punches operatively connected, circular concentric work-table sections arranged between each pair of dies, magnetizing-coils embedded in said tables, and means for operating said work-table sections in con' junction with said punches and dies, substatitially as described.

8. The combination in a punching-machine, of a bed-plate, annular grooves formed in the upper surface of said bed-plate, a work-table consisting of a plurality of independent circular sections having projections adapted to fit into the said grooves formed in the said bed-plate, fixed dies located in said bed-plate, punches to cooperate with said dies and means for operating said punches and said work-table sections in conjunction with each other, substantially as described.

9. The combination in a punching-machine, of a bed-plate, a Work-table composed of sections adapted to revolve upon said bed-plate, dies and their corresponding punches operating between said sections, a shaft and cams for operating the said punches, an arm pivotally connected to said bed-plate and operated by said shaft, pawls on said arm, and teeth formed on said sections adapted to be engaged by said pawls, substantially as described.

10. The combination in a punching-machine of a plurality of dies and punches, a work-table consisting of independent circular sections, a bed-plate supporting said sections, grooves formed in said sections and wires coiled in the grooves in the said sections by which said sections may be magnetized, substantially as described.

In testimony whereof we afiix our signatures in presence of two witnesses.

EDWIN H. PORTER. BURLEIGH (JURRIER. \rVitnesses:

WM. A. ALLISON, WM. R. STAoKHoUsE. 

